[Bug 288826] Booting a Read-Only system with /entropy file panic it while reading it with dd

From: <bugzilla-noreply_at_freebsd.org>
Date: Fri, 19 Sep 2025 21:59:36 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=288826

--- Comment #7 from xmirya@gmail.com ---
At least in my case it's caused by "options RANDOM_FENESTRASX" in the kernel
config, it's enough to add it to GENERIC in 15-STABLE to cause reproducible
crash on amd64 (tried on older/newer hardware); summing up:
1. 15-STABLE works well with with GENERIC kernel
2. 15-STABLE with GENERIC+RANDOM_FENESTRASX panics in fxrng_event_processor()
when writing to /dev/random the first time (`dd if=/entropy of=/dev/random
bs=4096` as done by rc on boot)
3. 14-STABLE with GENERIC+RANDOM_FENESTRASX works well

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